I have a 2012 Challenger R/T in Tungsten, also with auto stick and recently swapped the stock media center 130 (RES + RSC) to the new 730N (RHR). Other than that the only mod I have thus far is swapping my stock hood scoop plugs for the functional scoops. Oh and 30% tint all around
Also, LOVE the Boss 338s! I was looking at some wheel swaps I could do as well, because I hated all the ones Dodge offered (except the SRT options) so I went with the stock R/T instead of the clad. The 338s were the only ones I was interested in thus far as they look just right to be modern and retro. I think Boss have a designer locked in their basement right now, and the management keep him thinking it's still 1974 or something

I have a feeling the 338s will be my next purchase